From a45db258d0b50064bb404d1bb046191167520d45 Mon Sep 17 00:00:00 2001 From: Terry Jan Reedy Date: Wed, 17 Jul 2024 09:33:33 -0400 Subject: [PATCH] gh-78889: Stop IDLE Shell freezes from sys.stdout.shell.xyz (GH-121876) Problem occurred when attribute xyz could not be pickled. Since this is not trivial to selectively fix, block all attributes (other than 'width'). IDLE does not access them and they are private implementation details. (cherry picked from commit 58753f33e47fe48906883dc010771f68c13b7e52) Co-authored-by: Terry Jan Reedy --- Lib/idlelib/News3.txt | 3 +++ Lib/idlelib/run.py | 3 +++ .../next/IDLE/2024-07-16-16-57-03.gh-issue-78889.U7ghFD.rst | 2 ++ 3 files changed, 8 insertions(+) create mode 100644 Misc/NEWS.d/next/IDLE/2024-07-16-16-57-03.gh-issue-78889.U7ghFD.rst diff --git a/Lib/idlelib/News3.txt b/Lib/idlelib/News3.txt index b1b652dc562c8e..68702ac8fb9157 100644 --- a/Lib/idlelib/News3.txt +++ b/Lib/idlelib/News3.txt @@ -4,6 +4,9 @@ Released on 2024-10-xx ========================= +gh-78889: Stop Shell freezes by blocking user access to non-method +sys.stdout.shell attributes, which are all private. + gh-78955: Use user-selected color theme for Help => IDLE Doc. gh-96905: In idlelib code, stop redefining built-ins 'dict' and 'object'. diff --git a/Lib/idlelib/run.py b/Lib/idlelib/run.py index 8974b52674fb8c..8f98e73258e778 100644 --- a/Lib/idlelib/run.py +++ b/Lib/idlelib/run.py @@ -443,6 +443,9 @@ class StdioFile(io.TextIOBase): def __init__(self, shell, tags, encoding='utf-8', errors='strict'): self.shell = shell + # GH-78889: accessing unpickleable attributes freezes Shell. + # IDLE only needs methods; allow 'width' for possible use. + self.shell._RPCProxy__attributes = {'width': 1} self.tags = tags self._encoding = encoding self._errors = errors diff --git a/Misc/NEWS.d/next/IDLE/2024-07-16-16-57-03.gh-issue-78889.U7ghFD.rst b/Misc/NEWS.d/next/IDLE/2024-07-16-16-57-03.gh-issue-78889.U7ghFD.rst new file mode 100644 index 00000000000000..604194ebb2e859 --- /dev/null +++ b/Misc/NEWS.d/next/IDLE/2024-07-16-16-57-03.gh-issue-78889.U7ghFD.rst @@ -0,0 +1,2 @@ +Stop Shell freezes by blocking user access to non-method sys.stdout.shell attributes, +which are all private.